Table 1. The search strategy summary.

Items	Specification
Date of search	01/07/2022
Databases and other sources searched	OVID and MEDLINE
Search terms used	Free
	Registry
	Database
	Register
	Regist
	Upper Tract Urothelial Carcinoma
	Upper Tract Transitional Cell carcinoma
	UTUC
	Urothelial Cancer
	Upper tract urothelial cancer
	Carcinoma, transitional cell
	Carcinomas, transitional cell
	Cell carcinoma, transitional
	Cell carcinomas, transitional
	Transitional cell carcinoma
	Transitional cell carcinomas
	Cancer, ureteral
	Cancer of ureter
	Cancer of the ureter
	Cancers, ureteral
	Neoplasm, ureteral
	Neoplasms, ureteral
	Neoplasms of ureter
	Ureter cancer
	Ureter, cancer of
	Ureter cancers
	Ureter neoplasm
	Ureter neoplasms
	Ureteral cancer
	Ureteral cancers
	Ureteral neoplasm
	Ureteral neoplasms
	Kidney neoplasm
	MeSH
	Carcinoma, Transitional Cell
	Ureteral neoplasm
	Kidney neoplasm
	Registries
	Database management systems
Timeframe	1st July, 2002–1st July, 2022
Inclusion and exclusion criteria	Inclusion: registry based observational cohort study, English language, full text available
	Exclusion: single or multicentre once-off data collection that was not in a registry based format. Not published in a medical journal
Selection process	Two independent reviewers separately reviewed all articles, and 3rd reviewer if discrepancy